28046397 has 8 divisors (see below), whose sum is σ = 38008480. Its totient is φ = 18390960.

The previous prime is 28046371. The next prime is 28046423. The reversal of 28046397 is 79364082.

It is an interprime number because it is at equal distance from previous prime (28046371) and next prime (28046423).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28046397 - 2²³ = 19657789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28046327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76447 + ... + 76812.

It is an arithmetic number, because the mean of its divisors is an integer number (4751060).

Almost surely, 2^28046397 is an apocalyptic number.

It is an amenable number.

28046397 is a deficient number, since it is larger than the sum of its proper divisors (9962083).

28046397 is a wasteful number, since it uses less digits than its factorization.

28046397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153323.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 28046397 is about 5295.8849118915. The cubic root of 28046397 is about 303.8265291768.

The spelling of 28046397 in words is "twenty-eight million, forty-six thousand, three hundred ninety-seven".